Measurement of the Top Quark Mass with the Collider Detector at Fermilab

Details Measurement of the Top Quark Mass with the Collider Detector at Fermilab Measurement of the Top Quark Mass with the Collider Detector at Fermilab

2000-06-23

arxiv.org/abs/hep-ex/0006028v1

Phys.Rev.D63:032003,2001

Physics

High Energy Physics

High Energy Physics - Experiment

158 pages, 41 figures

Scientific paper

10.1103/PhysRevD.63.032003

This report describes a measurement of the top quark mass in $\ppbar$ collisions at a center of mass energy of 1.8 TeV. The data sample was collected with the CDF detector during the 1992--95 collider run at the Fermilab Tevatron, and corresponds to an integrated luminosity of 106 \pb. Candidate $t\bar{t}$ events in the ``lepton+jets'' decay channel provide our most precise measurement of the top quark mass. For each event a top mass is determined by using energy and momentum constraints on the production of the $\ttbar$ pair and its subsequent decay. A likelihood fit to the distribution of reconstructed masses in the data sample gives a top mass in the lepton+jets channel of $176.1\pm 5.1 (stat.)\pm 5.3 (syst.) \gevcc$. Combining this result with measurements from the ``all-hadronic'' and ``dilepton'' decay topologies yields a top mass of $176.1\pm 6.6 \gevcc$.

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